There’s an old Zen story about a scholar who visited a famous Zen master to inquire into the meaning of zen. The scholar asked question after question but was so full of his own ideas that he rarely gave the master an opportunity to answer.
After about an hour of this one-sided dialogue, the master asked the scholar if he wanted a cup of tea. When the scholar held out his cup, the master filled it but just kept pouring.
“Enough,” the scholar cried out. “The cup is full. It won’t hold anymore.”
“Yes,” replied the zen master. “and so is your mind. You can’t learn Zen until you empty your cup.”
– Author Unknown –